Means for operating elevator-doors



A. RUSH. MEANS-FOR OPERATING ELEVATOR DOORS. APPLICATION FILED JUNE 21, 1919.

1 372 090 Patented Mar. 22,1921;

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APPLICAT ON FILED JUNEZI, 1919.

Patented Mar. 22, 1921.

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A PPLICATION FILED JUNE 21} I9l9.

Patented Mar. 22, 1921.

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Sum/whoa Alb erbRush A. RUSH} MEANS FOR OPERATING ELEVATOR DOORS. APPLICATION FILED JUNE 21, I919.

Patented Mar. 22, 1921.

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ALBERT RUSH, or COLUMBUS, OHIO, iissienoa'ro THE vimcn COMPANY, or

comm/mus, OHIO, A CORPORATION or 01110. r 1

MEANS non OPERATING ELEVATOR-156038.

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Specification of Letters Patent. Pate ntedMair. 22, 1921.

y y Application flied J' ine 21, 1919. Serial No. 305,888.

more especially a door] that is installed at the elevator shaft or well and is adapted to be raised and lowe 'edto open and close the entrance to the elevator carriage.

The invention is embodied in the example herein shown and described the features of novelt being finally claimed.

In t e accompanying drawings- Figure 1 is a side View with the door and other parts in vertical section and broken out showing the door installed and partially raised in itsguiding frame at the well and the carriage equipped with means for operatin the door. p

Fig. 2 is a front detail view on a larger scale of the devices on the door and the meanscarried by the carriage for engaging the door devices for operating the door.

Fig. 8 is a side view of What is shown in Fig- 2 with some parts in section. i a "Fig. 1 isa horizontal section on the line IV-IVFig. 2 looking down.

Fig.5 is a front elevation of the door and its equipment including counterweighting means. y j I Fig. 6' is a diagranrillustrating the wir- In. the views. 10 designates the vertical guiding channels for the door, said channels being installed in the building at the opposite sides of the entrance or doorwayto the elevator well. lldesignates the doorwhich, inthe instance shown, isoi' special construe tion designed by me and has rollers 12 corners of itslower end to travel .in said channels 10, and upper corners to travel in inclined chan nels 14 mounted on the roof otthe carfor carriage 15. y

In practice'the'door is normally in lowered positionwith the upper rollers standing in the upper portion of the channel 10,

said rollers standing above the lower arms of members 16 to bridge the gaps between improved means for operating a door and.

on stud shaft 12? the opposite rollers 13 atjits opposite.

the channels 10 and the channels 14. The bridging members 16 afi'ord tracks for the rollers 13 when the door is raised to be supported by the channels 1 1 onthe roof of the car. In practice each floor of the building is equipped with a door way and door like that described. Preferably also each door is equipped with counterweights" 17 and chains 18 connected therewith, the latter passing over sheaves 19 and connected with the lower opposite corners of the door (see Fig. 5). The car, of course, is equip ed with ordinary or suitable means not shown) for raising and lowering it and for stopping it at any of the several floors.

The means for operating the door in cludes, on the door, brackets or frames 20 hung at their upper ends on the studshafts 12, said brackets being provided at their lower ends with rollers 21 traveling on the door frame to support saidbracket in verti: cal position. The mounting ofthe brackets 20 onthe stud shafts 12 is loose to permit face-wise oscillation of thedoorwith refer ence to the brackets. The brackets20 are conveniently formed somewhat ofS-shape in horizontal crosssection. as bestseen in Fig. so that one bend shall reach around the wall of channel 10 and the other may form a seat torecei-ve a gripper bar 22.

The gripper bar which has toothed or roughened sidesis secured in said seat.

=The means tor operating the door includes alsoon thecar an electric motor hung under the floor of thecar and averticallv arranged endless beltor chain 28 driven at the proper time by said motor, said chain passing over a suitable adjustable sprocket wheel 24 mounted in suitable frame in the upper portio'nyof the car. The, frame carrying the sprocket wheel 241 has suitable means 25 for adjusting it vertically to take up slackin the chain.

Thechain 23 has-connected with or included in it a frame 26 carrying a solenoid 27 sothat the separate armatures 28 and 29 thereof are pulled toward each othenwlien the solenoid is energized. Pivoted on the frame26 are clutch members 30 and 31 that are operatedhy means or pins .32 and 33 projecting laterally from head pieces on the outer ends of the aimatures and through slots 34L and 35 respectively in the frame and engaging corresponding arms of the clutch members. The other arms of the clutch members are connected by a coil spring 36 so that when the solenoid is not energized the clutch members are held in horizontal or normal position. The engaging portions of theclutch members 30 and 31 project from their-carrying levers so as to stand on opposite sides of the gripper bar 22, said engaging members having toothed or roughened faces to engage the corresponding faces of thegripper bar when the solenoid is energized. Any suitable wiring may be employedfor conducting electricity for the operation of the motor and the solenoid. The wiring can. also include suitable circuit breakers actuated by the door or belt or part thereon for automatically breaking the electric current through the solenoid as the doorapproaches or arrives at the limit of its travel in each direction. Such circuit breakers in their general characters are well understood by those skilled in the art. I show, however, in Fig. 6 a special system of i electrical wiring in connection with the mechanism adapted for operating the door in this.instance which will be understood by those skilled in the art. Upon said diagram the clutches shownin the other views are illustrated at 30v and 31. The several parts constituting the system are named on the drawing and the corresponding circuits or ters, The operating current is introduced at the service switch andthe current for actuating and reversing the motoris controlledby the double throw switch. The part marked limit device cuts out the current at the two limits of travel; The function of the hatchway limit switches is to throw in and out'the resistance of the motor rheostat forthe purpose of permitting the diminishing of the speed of the motor at both limits of travel as well as for furnishing starting resistance to the motor. These lines are designated by corresponding lethatchway limit switches are actuated by suitable, projections.

In practice to raise the door the solenoids are'energi zed to grip the bars 22 and the motor operated in'the proper direction to cause the upward movement of said bars and the door; To lower the door the solenoid is'energized and the operation of the motor reversed to cause the downward movement of'the door, As the door must be-left' in closed position the clutch and operating mechanism are always left in proper position for actuating another door when the car is brought thereto..

The mechanism can be used for operating ticularly shown.

jfaL dOOI other than the variety herein par- 6O clutch lever, and a stationary ing door for an elevator shaft or well including, in combination, a motor on the ole vator car, an endless belt driven by said motor, an electro magnetically operated clutch member on said belt, and stationary means on the door to be engaged by said clutch member.

2. Means for operating a vertically m0ving door for an elevator shaft or well including, in combination, a motor on the elevator car, an endless belt driven by said inotor, a clutch lever carried by said belt and having an engaging surface at its end, a solenoid and armature for actuating said grip bar on the door to be engaged by said clutch lever.

3. Means for operating a door for an clevator shaft or well including, in combination, a motor on the elevator car, an endless belt driven by said motor, a clutch lever carried by said belt and having an engaging surface at each of its ends, a solenoid and armature for actuating said clutch lever, and a grip bar on the door to be engaged by said clutch lever.

4. Means for operating a door for an elevator shaft or well including, in combination, a motor on the elevator car, an endless belt driven by said motor, a pair of clutch levers carried by said belt and having engaging surfaces at their ends, a solenoid and arniatures actuated thereby for moving said clutch levers into operative position and spring means for holding said clutch levers in inoperative position.

5. In combination with a vertically moving door, a frame pivotally connected with the door and carrying a gripper bar, an clevator car carrying a motor, a vertically traveling belt adapted to be driven by said motor in opposite directions and electromagnetically operated clutching means carried by said belt, said clutching means adapted to be engaged with and disengaged from said gripper bar.

6. Means for operating a door for an clevator shaft or well, including, in combination, a motor on the elevator car, an endless belt driven by said motor, means for operatively connecting said belt with the door to open and close the same and electrically operated means for automatically releasing said connecting means at each limit of the movement of the belt.

ALBERT RUSH. 

